$14 REPORT— 1885. 
‘Zoarium articulated, phytoid, erect, dichotomous, bi-, tri-, or multi- 
serial. Zocecia rising from a broad base, alternate, all facing the same 
way; a large oval membranous aperture. Avicularia, when present, 
sessile, and either lateral or anterior. —Challenger Report, p. 15. 
Mr. Busk, in the above report, divides the family into the following 
seven genera :— 
. Cellularia, Pallas (pars) § a, aperta. 
§ 6, fornicata. 
. Menipea, Lamourouz, Sections a and /. 
Emma, Gray. 
. Serupocellaria, Van Beneden. 
Canda, Lamouroux. 
. Nellia, Busk. 
. Caberea, Lamourouz, Sections a and /. 
NI OTR ODD 
Mr. Hincks, however, in his ‘ Brit. Mar. Polyzoa,’ accepts the family 
CELLULARIIDA, but his description differs in some few particulars from 
that of Mr. Busk. 
‘Zocecia in two or more series closely united and ranged in the same 
plane ; avicularia and vibracula, or avicularia only, almost universally 
present, sessile. Zoarium erect, dichotomously branched.’—Hincks, 
‘ Brit. Mar. Pol.’ p. 30. 
Genera: Cellularia, Pallas. 
Menipea, Lamouroun. 
Scrupocellaria, Van Beneden. 
Caberea, Lamourouz. 
This important group has a very wide distribution. In his admirable 
introduction appended to the description of the family, Mr. Hincks 
(pp. 30-32) points out many peculiar modifications of the appendicular 
organs, and also of the radical fibres, ‘by means of which the tufted — 
zoaria are attached’ to foreign bodies. There is still much to be learnt 
respecting these same radical fibres ; and in speaking of the fibres, espe- 
cially of Scrupocellara reptens, some curious modifications are pointed out. 
Mr. George Busk, in his paper on ‘A Peculiar Form of Polyzoa closely 
allied to Bugula’ (‘Quart. Jour. Mic. Soc.’ vol. xxi. new ser.), wherein 
he speaks of the ‘radical and connecting tubes, like the avicularia 
and vibracula representing modified zooids.’ This fact seems to be 
generally admitted, but still many minute particulars are pointed out by 
Mr. Busk in several species; and the student would do well to refer to 
this special paper, and also to the introduction of Mr. Hincks, previously 
referred to. 
Genus 9. Cellularia, Pallas. 
‘Zoarum jointed. Zocecia in two or three series, many in each 
internode, contiguous; dorsal surface perforated. Avicularia and vi- 
bracula usually wanting; occasionally an avicularium on a few of the 
cells of an internode.’—Brit. Mar. Polyzoa, p. 33. 
1. Cellularia Peachi, Busk, ‘ Ann. Mag. Nat. Hist.’ 2nd series, pl. vil. 
figs. 1-4. ‘Brit. Mus. Cat.’ i. 20. ‘Brit. Mar. 
Polyz.’ vol. i. p. 34, pl. v. figs. 2-5. Geo- 
graphical range chiefly northern, British and 
American. 
